A cold front associated with a developing storm system is forecast to move from west to east across Southern Ontario tonight through Saturday morning. Very strong southwest winds of 60 km/h with gusts to 90 km/h are likely in the wake of this front. Even stronger winds are possible in exposed areas along the shores of the Great Lakes, where sustained winds could reach 70 km/h and gusts may exceed 100 km/h.

Over Southwestern Ontario this evening, the strong winds could be ushered in by thunderstorm activity which may develop along or just in advance of the cold front.

The strong winds are forecast to persist through most of Saturday then moderate somewhat by Saturday evening.